for the arm on mine, I'll be using girders from an old Airfix pontoon bridge kit, with lots of thick power cables along it. Not sure how to make the actual traktor-beam bit on the end though - in theory any sort of zappy-looking electrodes would be ok, but I haven't been inspired yet.
The one in the Apocalypes book looks ok and appears to be just made from bitz, so maybe I'm overthinking it...
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